No. 549] 



NOTES AND LITERATURE 



565 



is left only a narrow lower arch ; and even this may waste away. 

 A MHm.tr the turtles the modifications in the temporal roof, numer- 

 ous and extreme as they are, are not regarded as of great im- 

 portance. It may be different, however, among the other 

 reptiles. If so, then, as it appears to the w riter, there might he 



U. S. National Museum 



FEDERLEY'S BREEDING EXPERIMENTS WITH THE 

 MOTH PYG^RA 



Interesting results have recently been obtained by Federley 1 

 by breeding moths of the Notodontid genus Pygoera. Three 

 common European species furnished the material — P. curtula, 



